Microsoft recently made available a beta of the second "Ultimate Extra" for Windows Vista, which is available for download free of charge for those who purchased the Ultimate Edition of the new operating system. Called DreamScene, the Extra lets users put videos as their desktop background.
Developed by Stardock and first demoed at CES in January, DreamScene also adds the capability to fill a background with an image without distorting its size. Microsoft reminds users that DreamScene is still a Technical Preview and unsupported until the final release. Vista Ultimate users can download DreamScene from Windows Update.